Intro to Headwork I

Number of cranial bones

8

Number of facial bones

14

name the cranial bones

frontal, parietal (2), sphenoid, temporal (2), occipital, ethmoid

name the facial bones

maxillary (2), zygomatic (2), lacrimal (2), nasal (2), inferior nasal conchae (2), palatine (2), vomer, and mandible

what are the unpaired cranial bones

sphenoid, occipital, frontal, and ethmoid

what are the paired cranial bones

parietal and temporal

what are the paired facial bones

maxillary, zygomatic, lacrimal, nasal, inferior nasal conchae, and palatine

what are the unpaired facial bones

vomer and mandible

2 parts of the cranium

calvarium or skullcap and floor

bones of the calvarium or skullcap

frontal, right parietal, left parietal, and occipital

bones of the floor of the cranium

right temporal, left temporal, sphenoid, ethmoid

Frontal Bone Articulations

4 cranial bones - right and left parietals, sphenoid, and ethmoid

Parietal Bone Articulations

5 cranial bones - frontal, occipital, temporal, sphenoid, and other parietal bone

Occipital Bone Articulations

6 bones - 5 cranial bones plus one - two parietals, two temporals, sphenoid, and atlas (C1)

Sphenoid Bone Articulations

12 bones - 7 cranial bones and 5 facial bones

Ethmoid Bone Articulations

13 bones - 2 cranial bones (frontal and sphenoid) and 11 facial bones

What are the Classification, Mobility and Movement Type of a Suture Joint?

Classification: fibrous

Mobility: synarthrodial

Movement: immovable

Sutures

membrane covered spaces that fill in after birth

Fontanels

regions where sutures join more slowly

“Soft Spots”

anterior and posterior fontanels

Anterior Fontanel becomes

Bregma

Posterior Fontanel becomes

lamba

Sphenoid fontanel becomes

pterion

Mastoid fontanel becomes

asterion

What is A?

External Acoustic (auditory) Meatus - EAM

What is B?

Mastoid portion of temporal bone

What is C?

occipital bone

What is D?

lambdoidal suture

What is E?

clivus

What is F?

dorsum sellae

What is G?

posterior clinoid processes

What is H?

anterior clinoid processes

What is I?

vertex of the cranium

What is J?

coronal suture

What is K?

frontal bone

What is L?

orbital plate

What is M?

cribriform plate

What is N?

sella turcica

What is O?

body of sphenoid (sphenoid sinus)

What is P?

petrous portion of temporal bone

What is A?

supraorbital margin of right orbit (SOM)

What is B?

crista galli of ethmoid

What is C?

sagittal suture (post skull)

What is D?

lambdoidal suture (post skull)

What is E?

petrous ridges

What is A?

dorsum sellae of sphenoid

What is B?

posterior clinoid processes

What is C?

petrous ridge or petrous pyramid

What is D?

parietal bone

What is E?

occipital bone

What is F?

foramen magnum

Brachycephalic

short and broad skull shape

Mesocephalic

average skull shape

Dolichocephalic

long and narrow skull shape